Angle Calculator

Calculate angles between lines, vectors, or from slope. Find complementary, supplementary, and vertical angles. Full visual representation.

Angle Type *

Angle Unit

Slope (m) *

Decimal Precision

Show Calculation Steps

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Angle Results

Angle

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Complement

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Supplement

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Vertical

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Angle Visualization

Graphical representation of the angle

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Calculation Breakdown

Step-by-step angle calculations

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Angle (θ)

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Complement

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90° - θ

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Supplement

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180° - θ

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Vertical Angle

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Angle Formulas

All related angle calculations

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Angle Tips

Understanding angles

📐 Mathematical Disclaimer: This angle calculator uses standard trigonometric formulas. Results are for educational purposes. Complementary angles sum to 90°, supplementary to 180°, vertical angles are equal.